WATCH: Confused Katrina Pierson accidentally admits Trump’s immigration plan won’t work

You might have missed it, but Donald Trump tried making another "pivot" in his immigration policy this week.

While Trump's actual positions on all issues are fleeting and subject to change, the candidate said very definitively last week that all undocumented immigrants living in the United States would have to leave and then get in line to get back in the country.

However, this week he said that he hadn't ruled out a path to legalization for some immigrants and said he would make any such determination about their status in the future.

Given this contradiction, CNN decided to bring Trump campaign spokeswoman Katrina Pierson on TV to help clear things up. As is often the case with Pierson, however, things got significantly muddier after her appearance.

Pierson's argument was that Trump couldn't possibly commit to deporting all undocumented immigrants living in the U.S. because there might be two-to-three times more of them than the official estimates claim.

"We are continuously hearing that there's not 11 million [undocumented immigrants], there could be 20 million, there could be 30 million," she said. "This is important because Mr. Trump can't promise to deport every single illegal alien in the country if there's 30 million."

This tactic of using imaginary statistics to prove her point is pretty crafty on Pierson's part. Similar, she could claim that Trump can't guarantee that unemployment won't hit 20% if he's elected if the "real" unemployment rate right now is 42%, as Trump has falsely claimed in the past.

All of this spin, of course, is just another way of inadvertently admitting that Trump's immigration "plan," such as it is, is totally unworkable.

Check out the whole clip below.